7.1.1 is fairly new, but 7.1 has been around a while and I have (older) packages for it. I also noticed the raft of missing packages recently. Maybe it is due to 7.1.1, I don't really know, I just download packages, don't know how the system works. It may be worth looking at nyftp.netbsd.org because things are supposed to show up there first, i.e., you might save a day or two?

At this point in time your options are to compile from pkgsrc or wait.

Edit/Addendum:

If you are hunkering down with inclement weather, and need an indoor project, NetBSD 8.0beta has pkg builds at the main site. I do find it interesting at a "Beta" version has more native packages than the most recent stable release.

I just finished putting together a 7..1.1 amd64 system from source. Unless your i386 system is fast Firefox (57.0.4) takes much longer to build than Friefox52 (esr, 52.5). 57.05 needs to build lang/clang, lang/rust and lang/gcc-49 as dependencies. One the other hand, the 57 release series is faster at rendering pages.